What is land-sea mask (LSM)?
The model surface is logically divided into sea and land points, by using a land-sea mask. A grid point is defined as a land point if more than 50% of the actual surface of the grid-box is land. With a TL511 resolution, islands like Corsica, Crete and Cyprus are represented by around five land grid points, Mallorca and Gotland by only two. The Faeroe Islands, the Shetland Island and Rhodos are not represented by any land point. The only minor inland lake which is represented by sea points is Vanern in southern Sweden.
